Hand‐Held Calibrator for Pressure‐Measuring Systems

The problems involved in laboratory and field calibrations of high‐amplitude dynamic‐pressure measuring systems are discussed. A novel method is described which utilizes the vibration sensitivity of the transducer for the generation of high amplitude dynamic pressures at a frequency suitable for calibration. The design, construction, and evaluation are described for a simple hand‐held calibrator based on this principle and providing over all system calibrations ±12.5 psi and ±5 psi, at 60 cps.